In Situ Intercalation Replacement and Selective Functionalization of Graphene Nanoribbon Stacks

详细信息    查看全文

• 作者：Bostjan Genorio ; Wei Lu ; Ayrat M. Dimiev ; Yu Zhu ; Abdul-Rahman O. Raji ; Barbara Novosel ; Lawrence B. Alemany ; James M. Tour
• 刊名：ACS Nano
• 出版年：2012
• 出版时间：May 22, 2012
• 年：2012
• 卷：6
• 期：5
• 页码：4231-4240
• 全文大小：654K
• 年卷期：v.6,no.5(May 22, 2012)
• ISSN：1936-086X

文摘

A cost-effective and potentially industrially scalable, in situ functionalization procedure for preparation of soluble graphene nanoribbon (GNRs) from commercially available carbon nanotubes is presented. The physical characteristics of the functionalized product were determined using SEM, evolved gas analysis, X-ray diffraction, solid-state ¹³C NMR, Raman spectroscopy, and GC鈥揗S analytical techniques. A relatively high preservation of electrical properties in the bulk material was observed. Moreover, replacement of intercalated potassium with haloalkanes was obtained. While carbon nanotubes can be covalently functionalized, the conversion of the sp²-hybridized carbon atoms to sp³-hybridized atoms dramatically lowers their conductivity, but edge functionalized GNRs permit their heavy functionalization while leaving the basal planes intact.

Keywords:

graphene nanoribbon stacks; intercalation; alkylation; conductivity; edge functionalization